Flat Spot

[RyanO82]

Hi Guys,

Had my car which is a R32 GTR for nearly two years and got a haltech ecu installed last week. Drove it home from the shop and seemed ok but have just got back from a drive today and there seems to be a flat spot or miss. When I get up it the car goes fine no miss nothing. But when im just cruising there seems to be a flat spot around the 2000 rpm mark. Spits and farts a bit until the revs pick up. Just curious if it has something to do with the tuning? Never done that with the stock ecu but is now. Should I call up the mechanic who installed and tune it and be asking him to rectify it? Just thought id get your opinions before giving him a call.

Cheers

Ryan

[StevenCJR31]

yes, give him a call, sounds like a tuning issue to me

[RyanO82]

Cheers Steven will do. Just wanted to make sure before talking to him. Think i spend enough cash there to make sure the cars going perfectly.

[scotty nm35]

Did he take it for a road tune after the dyno run? Usually these light load issues only pop up on the street.

These things happen, as long as he fixes it free as you have already paid him for a tune... If you have issues still, it may mean he simply can't tune. (block or copy/paste tuner)

[RyanO82]

Im really not sure Scotty if he did or not. He had the car over a week and also put a heavy duty clutch in. So for the cash i spent there I sort of expect it to be perfect. I'll see what he says tomorrow. I wont be paying any more to fix it as it never done that with the stock ecu. If he has an issue fixing it or refuses to I'll be happy to share.

[SargeRX8]

Mmm yeah when you dyno tune you just can't get to the really light loads. Its not the tuners fault as alot of tuners believe the dyno is the be all end all. My car was tuned in dyno for a good 4hrs. On very very light throttle the car does cannot gain rpm. The mix is too lean it just coughs and splutters. Abit of throttle enrichment should do the trick. What id do is tell the tuner to grab his laptop and jump in the car while you drive and have him adjust the cells and throttle enrichment. Shouldn't take long at all with a savvy tuner.

[RyanO82]

Can any of you guys recommend me a tuner in brisbane please.. I've been back to the mechanic and car still runs like crud. He did get in with the laptop and played around but not much changed. Find it hard to understand how they can hand back a car running like that after spending close to $5000 in their shop. I wont be going back there. I've talked to Mercury Motorsports and am thinking about taking it there for a re-tune. Just curious on other tuners out there you guys can recommend who have good previous track records.

Cheers